JPS59206024A - Filter member and apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material and a washable filter device comprising said member.

Most of the water sources currently used are not made to be potable and retain their flavour, but also to contain substances such as sand, clay particles and algae, even if they are harmless from a health point of view, e.g. in the agricultural sector. Solid condensation impurities can disrupt the operation of sprinklers and drip irrigation systems and must be filtered out before use. Such problems are particularly important in the case of drip irrigation systems.

Offshore filtering devices used include sand beds, screens, and fabric filters. Although sand bed filters are relatively inexpensive, they often require inspection and make the equipment bulky. Screen filters are small but expensive, and the provision of a self-cleaning device complicates the structure, increasing the possibility of breakage.

Mat-type fiber filters, in which the fibers are arranged in a three-dimensional arbitrary structure, have high sorting efficiency and are relatively inexpensive, but it is difficult to re-wash the solid matter stuck in the gaps of the filter, and cleaning is almost impossible. It's impossible.

A first object of the present invention is to provide a new filter member that overcomes the drawbacks of conventional filters.

A filter element according to the invention includes at least one body having at least two apertures, one for fluid inlet and one for outlet, and arranged generally uniformly over at least a portion of its actual length. It is characterized by comprising a plurality of fibers, and these fibers are arranged closely to each other.

A second object of the invention is to provide a filter element according to the invention as described above, which is also self-cleaning during the washing step;
Another object of the present invention is to provide a fluid filter device that has high filtration efficiency and is inexpensive.

A filter device for fluid filtration according to the invention includes at least one body having at least two apertures for fluid, each consisting of an inlet and an outlet, and a generally uniform body over at least a portion of its length. at least one filter member configured with a plurality of fibers of a structure, whereby the fibers in the member may be filtered under compressive force to increase the closeness of the fibers in the member; It is characterized by making it easier to clean filter deposits by leaving gaps between the fibers.

Next, it will be explained based on the drawings. These details have been set forth as preferred embodiments in order to facilitate an understanding of the principles and ideas of the invention, and to explain what is believed to be most useful. In this regard, no details beyond those necessary for a basic understanding of the invention have been given, but the description based on the drawings will make it clear to those skilled in the art how the following embodiments of the invention can be realized. I think it will become clear.

This will be explained below based on the drawings.

A filter member is a member that supports filter fibers, and is referred to herein as a "filter tube" or "filter tube".
In the claims, it is referred to as "one filter body."

FIG. 1 shows a filter tube (2) with a through hole (4) in the side wall and a closed bottom end. The through hole (4) is covered with a "skirt" made of a plurality of fibers (6) that constitute the filter member. These fibers (6) are
It surrounds the filter tube (2) and forms a layer having a common central axis. This layer may consist of several layers made up of fibers (6).

It has been found that in order to increase the efficiency of filtration, it is better to use at least 6 layers. The top end of the fiber layer has one wire (8)
is firmly fixed to the filter tube (2) by wrapping around the circumference, but the bottom end of the fiber (6) is not fixed.

In order to increase the overflow per unit time, the free end of the "skirt" of the filter tube (2) is at least partially
By wrapping the wire winding of the "skirt" located below, it is possible to create a long tube (by connecting several filter tubes (2)).

An embodiment in which the filter member of FIG. 1 is provided in a filter device is shown in FIGS. 17 and 18, and will be described later.

In the embodiment shown in the first figure, the filter member is cylindrical, but in the embodiment shown in the second figure, it has two rails (10) (12
) is a flat, approximately rectangular layered filter member that can be stretched between When filtering, the fiber layer is in contact with the perforated surface of the filter body (16). This filter body (16) is not circular but rectangular and is still provided below, rather than inside, the fiber layer.

In order to improve performance, the fibers (6) must be stretched tightly. FIG. 6 shows how to tighten the fibers (6).

One end of the fiber (6) constituting one filter layer is connected to the rail (
It is fixed to 12. Similarly, the other end is the rail (I8)
is attached to. Rail 08) is a bracket (
It is guided by a pin (20) slidably attached to 221, and is movable as shown by the arrow (example).

A pole (24) having a oak (2G) is also attached to the rail 08). Pol) (24)
Due to the elastic force of the compression spring (28) wound around the rail (
18) is pulled in the direction of bracket (22), where it tensions the fiber (6).

In order to bring the fibers (6) close to each other, it is preferable to hold the filter in advance with a plate (30) as shown in FIG. Play by spring (31)) (30)
presses the filter layer against the top surface of the filter body (16).

An embodiment that combines the features of the embodiments shown in FIGS. 3 and 4 is
It is shown in FIG.

The fibers (6) are pressed together and pulled from both sides. The surface of the filter body α6) is convex, and the fibers (6) of the filter layer are fixed at one end to a bracket (32) and tightly stretched as shown in FIG.

Since the shape of the top surface (J (a) of the filter body (16) is convex, when the fibers (6) are pulled strongly, the fibers (6)
) begin to press against each other.

A filter element according to the invention can be flushed or cleaned with a cleaning liquid. Washing is facilitated by relaxing any tension and compression forces placed on the fibers.

In the embodiment shown in FIGS. 6-5, cleaning is accomplished using known equipment, not shown, to relieve the forces that create tension or compression.

In the embodiment shown in Figure 4, a lever device is used to temporarily lift the play (30) against the compressive force exerted by the spring (31), thereby removing the compressive force from the fibrous layer.

In the embodiment shown in FIGS. 6 and 5, an eccentric wheel is applied to the top of the pole (24) to loosen the fiber layer and bring the cleaning liquid into contact with all the fibers.

In the embodiment of FIG. 6, the conical filter body (16) has a cylindrical neck (34) whose wide bottom is closed. The filter main body (16) is made of fibers (
6) It is covered with a nice "skirt". Fiber (6)
As in the embodiment shown in FIG.
) is fixed to the filter body (16).

A bell-shaped member (
Three pieces are removably attached. Bell-shaped member (3
One has a conical portion (3G) having a through hole and a cylindrical neck end that is detachably fitted to the neck of the integrated filter.

The conical shape of the conical part (36) is similar to that of the filter body 06.
), it matches the shape of the outer circumferential surface of the "skirt".

By means not shown, the bell-shaped member (351) can be moved in the direction of arrow (B). In FIG. This is the same as the washing position where no compressive force is applied to the fibers.

If a strong contact between the fibers (6) is required for filtration, the member (35) is moved downward until it comes into contact with the fibers to provide the necessary degree of compression.

In another embodiment shown in Figures 7 and 8, the filter element consists of a generally cylindrical coil of fibers (6) wound around a cylindrical core to form several layers. ing. Next, the winding core is removed, and the coil that retracts from the fibers is exposed through the through holes (4
2) into a cylindrical filter core body. Except for the recessed portion (44), the filter core frame has a substantially cylindrical shape, and its outer diameter is made to be slightly smaller than the outer diameter of the winding core.

As shown in FIG. 8, the filter coil can slide on the outer circumferential surface of the core (40) while leaving a gap therebetween. However, in order for the filtration action to take place, the fibers (6) must be tightly stretched and in close contact with each other.

A method for achieving this condition is shown in FIG.

The cam (46) is rotated to the maximum deflection position as shown in FIG. 7, and the filter coil is tensioned until the filter coil strongly presses against the through hole of the filter core (40).

When cleaning is performed, it is necessary to loosen the tension by rotating the cam (6) to the minimum deflection position, as shown in FIG. This also helps stabilize the filter coils when making them to prevent them from accidentally unraveling or loosening their structure.

Most advantageously, applying an adhesive to at least one generatrix of the coil, ie one side of the helix with equal pitch, while holding the coil on the winding core, helps with this stabilization.

In another embodiment shown in FIGS. 9 and 10, one end of a plurality of equal length fibers (6) is attached to the upper ring (48) and the other end is attached to the lower ring (50). The two rings (48) (50) are slid onto the filter tube (2). Upper ring (48
) is pinned and fixed to the filter tube (2), and the lower ring (50) is rotatable.

As shown in FIG. 10, by adjusting the distance between rings (48) and (50), the axially wound fibers (6
) can be loosened. At this time, cleaning is performed.

By turning the lower ring (50), the fiber (6) of FIG.
is rotated while closely contacting the tube (2) and the through hole (4) to form a spiral extending in a nearly vertical direction. A device, not shown, is installed to secure the ring (50) in the twisted position. Cleaning is performed by rotating the ring (50) in the opposite direction to loosen the helix of the fibers (6).

In the embodiment shown in FIGS. 11 and 12, in the filter member in which the fibers (6) are stretched horizontally between two rails (52 (54)), the fibers (6) are By directing it into the layer and making a pronounced reciprocating movement, each fiber is cleaned.To that end, the rail f521 (54)
Each rotates around the axis (5G) f58).

When these axes are horizontal, they pass through the middle of the thickness of the filter member. For example, when this filter member consists of five layers, this axial surface is provided in the sixth layer. In the vertical plane, the axis connects the fiber (6) to the rail (521 (54)
Pass through the surface to which it is attached.

When the rail (54) rotates around the axes (56, 58), the rectangular cross-section of the filter member is rotated, as shown in FIGS. It will have a diamond-shaped cross section as shown in . Such deformation causes the different layers to slide relative to each other.

The rotary motion of the shaft that achieves this effect is similar to that of the rail (
Eccentric wheels (60) acting on five fixed arms (62)
) by rotating it against the restoring force of the compression spring (64). The eccentric (60) is adapted to be rotated by a small turbine wheel driven by water from the conduit.

In addition to the rotational movement described above, the tension in the fibers can be loosened to some extent during the washing step.

In the embodiment shown in FIG. 13, which differs from FIG. 11, a large amplitude reciprocating movement is obtained by further providing two rails +66) (68) to which the fibers are fixed. This rail (6G) (68) has a fiber layer (II).
is fixed, and the other fiber layers (1) (I) (V) are not fixed to the rail (70) (7
It is fixed only to 21.

By holding the rails (66) (68) immovable,
The fibers move relative to each other and this movement is caused by the rail (70) (
721 will be notified. Several structures for this purpose are known and will not be described or illustrated.

Another embodiment of the cleaning method is shown in FIG. In this example, the filter fibers (6) include comb-like members (
74) is screwed in and reciprocated in the direction of arrow (C) to mechanically remove dirt adhering to the fibers (6) and perform cleaning. Due to this cleaning action, dirt is easily removed.

A similar mechanical cleaning action can also be achieved by a plurality of stiff fibers (76) placed perpendicular to the fibers. The cleaning fibers (76) pass through the gap between two adjacent layers of fibers. This kind of “comb”-shaped fiber (76
) moves between the fiber layers in the direction of arrow (D), thereby removing the dirt.

A preferred method of cleaning the filter component is to jet a fluid against the filter layer.

As shown in FIG. 15, during cleaning, a plurality of jets (80) are emitted from a cleaning tube (78) located near the filter layer to impact each part of the layer and remove dirt.

In order to clean the entire filter surface, a sufficient number of cleaning tubes (78) and cleaning tubes (78) and jets 180) are provided.
It is necessary to cause relative movement between the filter surface and the filter surface. A separate supply source of cleaning fluid may be provided.

In the embodiment shown in FIG. 15, the jet stream 05) injected onto the filter layer is directed to the hard top surface α of the filter body (16).
For (a), the filter is compressed one layer. However, some types of solids cannot be completely cleaned.

In the embodiment of FIG. 16, a filter body (16)
A cleaning tube is provided inside the filter, and a jet stream (80) is injected onto the filter layer from below. The jet (80) is ejected from between the supports (82).

In this embodiment, the support member (82) is provided with a large through hole so as not to interfere with the jet flow (80).
A mesh structure is preferable.

In order to effectively remove filter deposits, some of the cleaning methods described above, such as the jetting method of the embodiment shown in FIGS. 15 and 16, and the method shown in FIGS. It is also possible to use a combination of any of the mechanical methods described above.

In the embodiments described above, the filtration fluid passes in a direction substantially perpendicular to the surface, ie, across the filter layer. It has been found that a good filtration effect is achieved when the fluid passes through the interstices between six layers of fibers that are close together.

FIG. 17 shows an embodiment of a removable filter member provided inside the tube.

A plurality of filter fibers (6) are suspended around the rigid ring (84). The fiber (6) wrapped around the rigid ring (84), together with the sealing ring (8G),
The lower member (881) is inserted into the lower member (881). The cylindrical portion of the lower member (881) is all filled with fibers arranged in the same axial direction.

The upper end of the lower cylinder (88) is widened and a sealing ring (8G) is fitted therein. Suwachi, lower cylinder (88)
The upper end is widened and recessed in the centripetal direction, into which a sealing ring' (86) is fitted.

Peripheral edge (92) of the recess provided at the upper end of the lower tube (88)
By fitting the upper cylinder (90) into the upper cylinder (90), the upper cylinder (90) is inserted.
0) is fixed to the lower cylinder (88). Upper tube (9
Both the lower cylinder (88) and the lower cylinder (88) are provided with flanges on their circumferences, and are connected to the end of the pipeline (98) through a sealing ring (94)M and a union nut (96). They are connected to maintain a liquid-tight state.

The arrows in FIG. 17 indicate the flow through which the fluid fed into the filter member is discharged. If the pressure drop before and after passing through the filter exceeds a predetermined value that causes damage to the filter components, union oak)
(96) can be removed and all parts replaced.

The union nut (96) may be part of the pipeline (98). In that case, both ends of the lower tube (c) and the upper tube (90) need to be provided with grooved sleeves that are bonded to the cylindrical portion of each pipeline by brazing.

In contrast to the disposable filter member shown in FIG.
In FIG. 8, a washable filter element is shown.

One chimney (100) shown in FIG. 18 can be connected to a pipeline. A filter main body (102) is attached to the inside of the chisel tube (100), and a venturi-shaped hollow portion is provided in the central axis of the main body (102). A ring (1
A sleeve-shaped filter layer consisting of fibers (6) with 04) is attached.

At the offshore position shown in the figure, in the center of the filter member there is a hollow mandrel (1
06) is placed. The fluid is mandrel (io6
) and at the same time the layer is held outside the mandrel (106).

To clean the filter member, stop the main flow indicated by the arrow (A), and momentarily move the mandrel (10
6) and into the hollow part of the mandrel (106),
It begins by flowing the cleaning fluid in the direction of arrow (C).

Since the shape of the mandrel (106) is approximately an inverted cone, when the mandrel (106) is pulled up, the force that tightens the fibers (6) is removed along the p-polarized portion of the layer, and the mandrel wall surface and the fiber layer wall surface are separated. A gap is formed between them.

By spraying the cleaning liquid from the through hole (108), an impact is applied to the separated filter layer, and the solid matter is washed away. To resume filtration, the mandrel (106) is lowered again to the position shown in Figure 18, stopping the flow of cleaning fluid and simultaneously allowing the main fluid to flow. This includes:
The operation can be easily performed using known equipment.

Details of this device will be omitted.

Another embodiment of a washable filter member is shown in FIG.

This filter member has an introduction hole (112) and a discharge hole (
113) and a collar (114) provided at the center so as to be removably attached to the inner wall of the pipeline (116).

The sleeve (110) includes a first cover plate (118) through which a small diameter tube (120) passes, and a second cover plate (122).

The filter fibers (6) are filled over the entire cross section of the sleeve (iio), and each free end is surrounded by two lid plates (118) (1
22). In addition, two drain pipes (1
24) is provided.

In the illustrated filtration position, two drain pipes (124
) is closed by a valve (126). The fluid to be filtered flows from left to right, as shown by the arrow. The collar (114) prevents fluid from flowing on either side of the rubber sleeve (110), so that fluid flows through the inlet hole (112) and tube (120) into the sleeve (110).
The fibers then pass through a capillary tube formed between fibers arranged in the axial direction, and are discharged through a discharge hole (filter 11).

Cleaning is initiated by opening two valves (126). The tube (1) inserted inside the sleeve (11D)
20), the pressure within the sleeve (110) is almost at its maximum, resulting in a pressure drop in the annular cavity formed on both sides of the collar (114) around the sleeve (110).

This pressure difference causes the elastic rubber sleeve (i 1
o) is expanded slightly and the pressure holding the fibers (6) tightly together is reduced. The fiber bundles are then loosened and the fluid flowing through the fibers easily cleans each soiled fiber.

20 and 21 show a filter device according to the invention in a filtration stage and a washing stage, respectively.

The filter element used in this example is in the same tube shape as shown in the first figure. a filter tube (2);
Fiber (6) The thicker "skirt" is the inlet for raw water (
130) and an outlet (138) for cleaning fluid.

In the filtration stage shown in Figure 20, the raw water enters the housing (128) through the first multi-directional valve (134) and then, by pipe pressure, from the fiber "skirt".
It enters the through hole (4) (Fig. 1) of the pipe (2) and then enters the second
It is discharged from the discharge port (132) through the valves (1 and 6).

P overaction takes place as the fluid passes through the fibers (6).

In this embodiment, a relatively tight fibrous layer is formed, partially due to the water pressure exerted on the fibers (6) and partially due to their natural hardness, allowing only fluids to pass through and not solid impurities.

These solids are retained in the filter layer.

After a few hours, depending on the solids loading and overload, the residual solids adhering to the fibers must be removed. This is done by switching valves (134) (136) to the position shown in Figure 21.

This filter is subjected to a cleaning process, in particular a backwash.

Fluid from the inlet (130) passes through the valves (134) (136).
), the fluid enters the tube (2) through the first illustrated through hole (4) and descends the tube (2), the fluid impinging on the fibers (6) from inside the 1 skirt and removing solids. While removing the fibers (
6) Increase the gap between them.

The solid-laden fluid is discharged to the atmosphere or to a sewer pipe through a backwashing fluid outlet (138) of the first valve (134).

Backwashing can be initiated and terminated manually or automatically. For automatic operation, a transducer may be provided to track the pressure difference between the filter housing (128) and the tube (2), i.e. the filter inlet and outlet.

When the fiber layer becomes clogged and this pressure difference exceeds a predetermined limit, backwashing is initiated by switching the valve (1'34) (136) as described above. This switching operation is done automatically using appropriate actuators.

After the predetermined cleaning time has elapsed or the pressure differential has returned to normal, the valves (134) (136) are switched again and filtration is again sustained.

22 and 26 respectively show the filtering stage and the cleaning stage of another embodiment of the filter device according to the invention.

This device uses the same components as the first illustrated device, except that the cleaning step is performed by normal direction cleaning rather than back cleaning.

This device is provided with a housing (128), a main fluid inlet (130) and a clean fluid outlet (132).

In the filtration stage shown in FIG.
130) and then through a skirt of fibers (6) and through holes (4) shown in the first diagram, the fluid under tube pressure passes through the valve (134). Through,
to a clean fluid outlet (132).

During the cleaning phase, the valve (134) creates a flow path such as the position shown in Figure 23. This closes the cleaning fluid outlet (132) and opens the cleaning fluid outlet (138). Body fluids entering from the inlet (130) are
It impinges on the fibers (6) from all sides, removing solids and passing them through the outlet (138) into the atmosphere or into the sewer.

By providing a filter member having a filter body with a polygonal cross section in addition to the flat filter member described above, it is also possible to form a cylindrical filter body. Each side of this main body is shown in Figures 2 to 5 and Figure 1.
It is covered by a single layer of flat filter as shown in FIGS. 1-16.

The fibers of the filter element according to the invention may be made of any material compatible with the fluid to be filtered, but optimal results can be obtained, for example, with twisted synthetic fibers. The surface fabric imparted to the thread by a torsional action ensures the exact size of the space through which the fluid passes, without excessive pressure loss, and at the same time removes all the solids required for filtration. the smallest size possible. It is of course also possible to use a single untwisted fiber with a woven surface.

It has been found that it is advantageous to provide a relatively coarse texture on the top surface of the filter body to avoid forming portions of the filter layer that would impede penetration. This allows fluid to flow between the two through holes below the lowest fibers of the fibrous layer.

In the examples described above, the filter deposits are clearly solid, but this is not necessarily the case. When filtering liquids, the deposits may be viscous gases or liquids.

The invention is not limited in detail to the embodiments described, but can also be of other shapes without departing from the necessary requirements. In other words, these embodiments are described for illustrative purposes only, and are not meant to be limiting, and it is understood that various modifications and changes may be made without departing from the scope of the claims. Needless to say.

[Brief explanation of the drawing]

FIG. 1 shows a first embodiment of a filter element according to the invention in longitudinal section, in which the filter element comprises fibers arranged in a "skirt" configuration. FIG. 2 is a longitudinal section through a second embodiment of a filter element in which the fibers are arranged in a flat layer. FIG. 6 is a longitudinal cross-sectional view of an embodiment of a filter member showing the fibers in the flat layer being stretched tightly by a mechanical device. 4 is a longitudinal cross-sectional view of the member of FIG. 2 showing the fibers being pressed against the filter body by a spring-loaded plate; FIG. FIG. 5 is a longitudinal cross-sectional view of another embodiment of a filter member showing the filter fibers being stretched tightly and pressed against the filter body by a mechanical device. FIG. 6 is a longitudinal cross-sectional view of a modification of the filter member of FIG. 1, in which the filter body is conical. FIGS. 7 and 8 each show further embodiments of the filter member according to the present invention, each of which includes:
FIG. 3 is a cross-sectional view showing a filtration stage and a washing stage. FIG. 9 is a front view of a modification of the filter element of FIG. 1 during the filtration stage. FIG. 10 is a longitudinal sectional view showing a cleaning stage of the filter member of FIG. 9; FIG. 11 is a longitudinal cross-sectional view of a modification of the filter member of FIG. 3, illustrating the step of cleaning the fibrous layer. FIG. 12 is an enlarged view of a portion of FIG. 11. FIG. 13 is a modification of the embodiment shown in FIG. 11, and is a diagram schematically showing a fiber layer. FIG. 14 is a cross-sectional view of another cleaning stage embodiment. FIG. 15 and FIG. 16 are both diagrams showing a cleaning step using a jet stream. FIG. 17 is a longitudinal cross-sectional view of the male side of the detachable filter member (31), showing a state in which the liquid to be filtered flows through the filter fibers. FIG. 18 is a longitudinal cross-sectional view of one embodiment of a washable filter member with a sleeve-like fibrous layer that allows the fluid to be filtered to flow along the filter fibers inside the filter layer. FIG. 19 is a cross-sectional view of one embodiment of a washable filter element operated in a manner similar to the embodiments of FIGS. 17 and 18. Figures 20 and 21 are schematic diagrams showing the filtration stage and backwashing stage, respectively, of a filter device according to the invention. Figures 22 and 23 are schematic illustrations of the filtration stage and impact cleaning stage, respectively, of a filter device according to the invention. (2) Filter tube (4) Through hole (6) Fiber
(8) Wire (10) f12) (18) v
- Rule (14) Top surface (16) Filter body (20
) Pin (Leakage) (321 Bracket (24) Bolt (26) Nut (28 + (3) 1 Compression Spring (62) Side Plate (34) (181 Neck (3 ■ Bell-shaped member (3G) Conical part (40) Filter core (42) Through hole (44) Recessed part (46
) Cam (48) Upper ring i! 5o) Lower ring (5c4) Rail (56) (58) Shaft (6
0) (62) Eccentric wheel (64) Spring f66) (
6 seconds (70) (72 rules (71 comb-shaped member (76)
) Fiber (78) Cleaning pipe (80) Jet stream
(82) Support material (84) Ring
(86) (94) Seal ring (88) Lower cylinder
(90) Upper simple peripheral edge (9G) Union nut (98) Pipeline (102)
ξ Eve (102) Body (104) Ring (1
06) Mandrel (108) Through hole (110) Sleeve (112) Introduction hole (i 13) Discharge hole
(114) Color (116)・ξ Eve line (
118) First cover plate (120) tube (122)
Second lid plate (33) 4. . (124) Drain pipe (126) (134) (15
6) Valve (128) Housing (150) Inlet (
132) (138) Discharge port (34)

Claims (1)

[Scope of Claims] (1) at least one body having at least two apertures consisting of an inlet hole and a discharge hole for fluid; and a plurality of fibers arranged in close contact with each other. (2) The filter member according to claim (1), wherein the main body has a circular cross section, is closed at one end, and has a plurality of through holes on its surface. (3) A plurality of fibers are firmly attached to at least one end of the main body and are formed as at least one skirt covering at least a portion of the main body having the through hole. A filter member. (4) Claim (1) characterized in that the main body has a rectangular cross section and is provided with a plurality of through holes on at least one of its main surfaces. One filter member listed. (5) The filter member according to claim (1), characterized in that it consists of a single layer of a generally planar filter made of a plurality of fibers. (6) The filter member according to claim (4), wherein the surface having the through holes is a convex surface. (Force) A filter member according to claim (1), characterized in that a plurality of filter fibers are arranged in a plurality of layers. (8) The filter member has a generally cylindrical coil shape. The filter member according to claim (1). (9) The filter member according to claim (1), further comprising a device for increasing the closeness between the fibers. 00 10.) The filter member according to claim 9, wherein the device for increasing the closeness between the fibers comprises a surface having through-holes that can freely come into contact with the fibers. (11) The device according to claim (9), wherein the device for increasing the closeness between the fibers is a tension device pressed by a panel. (12) between a first position in which the device for increasing the closeness of the fibers tightens the fibers relative to the body and with respect to each other and a second position in which the device loosens the fibers;
Device according to claim 9, characterized in that it is a rotatable cam. 03) A device that increases the closeness between fibers,
a first position in which the fibers are tightly wound helically around at least a portion of the body having a through hole, and a second position in which the fibers are at least partially unwound from the body so that the fibers are loosened; The filter member according to claim 2 or 9, wherein the filter member is a rotatable ring between the filter members. 04) Claim 1 further comprising a device for removing solid matter from the fibers after filtration.
). 09 The filter member according to claim 04, wherein the device for removing solid matter is a comb-like member that can slide reciprocally. (3) (16) The method according to claim 7 or 04, further comprising a device for reciprocating one of the fibrous layers relative to another adjacent layer. Filter part. (1) The filter member according to claim (14), wherein the device for removing solids is at least one jet stream injected onto the filter fibers. (18) Claims characterized in that at least a portion of the body is generally cylindrical, and at least a portion of the cylindrical portion is generally filled with a plurality of generally uniformly arranged filter fibers extending in a central axis direction. The filter member according to item (1).09) The main body is provided with a hole having at least a portion thereof tapered, and at least the tapered portion of the hole is brought into contact with a sleeve-like layer such as filter fibers. Claim No. 1 (1)
) A filter member described in item 1. (20) Complementary to the sleeve-like fiber layer of the tapered part, movable in the axial direction, and provided with a mandrel having a through hole and a hollow part, at the first position, (4) provided in the main body. This sleeve-like layer is pressed against the wall of the hollow hole, and at a second position moved in the axial direction, the pressure is removed from the sleeve-like layer, and the sleeve-like layer is then pushed through the through-hole. Claim (19) characterized in that a jet stream is injected against the
The filter parts listed in section. (2υ The main body is an elongated, almost cylindrical sleeve having a collar at the center of the outer peripheral surface and a plurality of through holes on the surface where the collar is located, and the shaft is arranged so as to almost fill the hollow part of this sleeve. A filter member according to claim (1), characterized in that a plurality of fibers are arranged in a direction. at least one filter member having at least one body having apertures of at least one body and a plurality of fibers substantially uniformly arranged over at least a portion of the actual length of the body; In order to increase the closeness between the plurality of fibers in one member, by applying force, the fibers are pushed together, and by relaxing this force, the closeness between the fibers is increased. A filter device characterized in that it reduces the amount of dirt deposited on the filter and facilitates cleaning of filter deposits.